231237345 has 16 divisors (see below), whose sum is σ = 374664960. Its totient is φ = 121764864.

The previous prime is 231237341. The next prime is 231237367. The reversal of 231237345 is 543732132.

231237345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231237345 - 2² = 231237341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231237341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96384 + ... + 98753.

It is an arithmetic number, because the mean of its divisors is an integer number (23416560).

Almost surely, 2^231237345 is an apocalyptic number.

It is an amenable number.

231237345 is a deficient number, since it is larger than the sum of its proper divisors (143427615).

231237345 is a wasteful number, since it uses less digits than its factorization.

231237345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195224.

The product of its digits is 15120, while the sum is 30.

The square root of 231237345 is about 15206.4902262159. The cubic root of 231237345 is about 613.7893162857.

Adding to 231237345 its reverse (543732132), we get a palindrome (774969477).

The spelling of 231237345 in words is "two hundred thirty-one million, two hundred thirty-seven thousand, three hundred forty-five".